The next evolution in wireless networking holds promises of self-driving cars and movies that download in the blink of an eye. 5G is big at this year's Mobile World Congress, but don't expect it until 2020.

In this week's episode of The Fix, we show you how to make your own motion-activated light for Halloween decorating, how to create a festive party atmosphere using Phillip Hue lights and your smartphone, and how to carve a pumpkin using free online templates.